"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : DMS分布式锁
Case Name   : 加锁失败，分布式锁加锁成功，本地锁加锁失败
Create At   : 2023/4/20
Owner       : opentestcase033
Description :
    1.创建测试表
    2.主节点开启事务A执行create index
    3.开启事务B执行drop table
    4.清理环境
Expect:
    1.设置成功
    2.成功
    3.阻塞
    4.成功
History     :
"""

import os
import time
import unittest

from testcase.utils.Logger import Logger
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.ComThread import ComThread


class DmsOck(unittest.TestCase):

    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.constant = Constant()
        self.table = 't_dms_ock_0063'

    def test_dms_ock(self):
        text1 = '-----step1:创建测试表;expect:执行成功-----'
        self.log.info(text1)
        create_tb = f"drop table if exists {self.table} cascade;" \
                    f"create table {self.table}(" \
                    f"id int, name varchar, source number) with(segment=on);" \
                    f"insert into {self.table} values(1, 'haha', 92);"
        create_tb_res = self.pri_sh.execut_db_sql(create_tb)
        self.log.info(create_tb_res)
        self.assertTrue(self.constant.CREATE_TABLE_SUCCESS in create_tb_res
                        and self.constant.INSERT_SUCCESS_MSG in create_tb_res,
                        f"执行失败:{text1}")

        text2 = '-----step2:主节点开启事务A执行create index;expect:成功-----'
        self.log.info(text2)
        sql_a = f"start transaction;" \
                f"create index i_dms_ock_0063 on {self.table}(id);" \
                f"select pg_sleep(6);" \
                f"end;"
        session1 = ComThread(self.pri_sh.execut_db_sql, args=(sql_a,))
        session1.setDaemon(True)
        session1.start()
        time.sleep(0.5)

        text3 = '-----step3:开启事务B执行drop table;expect:阻塞-----'
        self.log.info(text3)
        sql_b = f'''begin;
        drop table {self.table};
        rollback;'''
        session2 = ComThread(self.pri_sh.execut_db_sql, args=(sql_b,))
        session2.setDaemon(True)
        session2.start()
        session2.join(4)
        session1.join(10)
        res_a = session1.get_result()
        self.log.info(f'session1_results: {res_a}')
        res_b = session2.get_result()
        self.log.info(f'session1_results: {res_b}')
        self.assertIn(self.constant.CREATE_INDEX_SUCCESS_MSG,
                      res_a, f"执行失败:{text2}")
        self.assertIn(self.constant.COMMIT_SUCCESS_MSG, res_a, f"执行失败:{text2}")
        self.assertIsNone(res_b, f"执行失败:{text3}")

    def tearDown(self):
        text4 = '-----step4:清理环境 expect:成功-----'
        self.log.info(text4)
        drop_tb_res = self.pri_sh.execut_db_sql(
            f"drop table if exists {self.table} cascade;")
        self.log.info(drop_tb_res)
        self.assertIn(self.constant.DROP_TABLE_SUCCESS,
                      drop_tb_res, f"删表失败:{text4}")
        self.log.info(f'-----{os.path.basename(__file__)} end-----')
